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US1758846A
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US
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Hole-opening punch
Assignee: Sullivan Machinery Co
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Filing: 1921-10-08
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Granted: 1930-05-13
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Expires: 1941-10-08
Abstract
No abstract record available.
Inventors
- 👤 Louis A Maxson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/02; B21J9/04; B21K; B21K5/00; B21K5/02; B21K5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-05-12 | 1933-11-11 | 1934-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-05-12 | 1937-11-11 | 1938-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-05-12 | 1941-11-11 | 1942-05-13 | $7700.00 | Window Closed / Lapsed |